August · Indonesia
Best time to visit Lake Toba in August Weather, crowds & prices
Weather in Lake Toba in August
Average temperature 20°C, 366 mm of rain, about 17 days with 6+ hours of sunshine and 91% humidity — based on the five most recent complete years of ERA5 data (2021–2025).
August score
6.1/10
Ranked #8 of 12 months
- Avg temp
- 20°C
- Rainfall
- 366 mm
- Humidity
- 91%
- Days with 6h+ sun
- 17
- Crowd Density
- Moderate Crowds
- Average Expenses
- $$ · Moderate Cost ($$)
August in Lake Toba scores 6.1/10 for nature and wildlife travel - ranked #8 of 12. Expect around 20°C, 366 mm of rain, and roughly 17 days with 6+ hours of sunshine this month.
Lake Toba fills a vast volcanic caldera on Sumatra-Batak villages on Samosir Island and misty lakeside viewpoints. Best window: the drier months outside peak monsoon.
August in Lake Toba — middling scores, decent value
August averages 20°C (69°F) — warm for the outdoors: start trails early, use shaded routes at midday, and carry more water than you think you need.
366 mm of rain puts this in monsoon territory — about 17 days with 6+ hours of sunshine across the whole month, and multi-day washouts are normal.
It scores 6.1/10 here, 8th of 12 months, against 6.8/10 in the destination's best month.
Pack light clothing, a hat and real sun protection, a proper rain shell rather than an umbrella, footwear you can get muddy.
Plan for mid-season pricing, with crowds are moderate.
Frequently asked
- What is the weather like in Lake Toba in August?
- In August, Lake Toba averages 20°C, 366 mm of rain, and about 17 days with 6+ hours of sunshine. Its climate-comfort score is 6.1/10.
- Is August a good time to visit Lake Toba?
- August earns a 6.1/10 climate-comfort score. Use the year-round chart to weigh the weather against your budget and crowd preferences.
- How much does it rain in Lake Toba in August?
- Expect about 366 mm of rain in August. Average humidity is 91% and there are about 17 days with 6+ hours of sunshine.
Curated in Lake Toba
Tickets & experiences
Things to do in Lake Toba
Lake Toba, Indonesia. Live activities and tours from GetYourGuide, matched to this destination.